1.Inductance is measured with a LCR meter:HP4284A & 3532-50 or equivalent.
2.D.C .R is measured with a Digital Multimeter TH2512B or equivalent.
3.Rated Current:The rated current is the current at which the inductance decreases by 25% from the initial value or the temperature rise is △T＝40℃ ,whichever is smaller(Ta＝20℃).